I'm certified in both 3.7 and 4.1. If you passed 3.7 you should have no
problem with 4.1. Just learn some of the new additions and you'll be fine.
By new additions I mean mostly the adaptive differencing technology and so
forth. What platforms is it supported on (and encryption)? How does it work?
Etc..

Gerald Wichmann
Systems Engineer
Sansia System Solutions
408-844-8893 work
408-884-9801 fax